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CHAPTER THREE
3.1 Installation Background
This section gives general information on planning the network using
Andrew LAUs along with one or more MAUs.
Careful network planning is important before installing your MAUs,
LAUs, and attaching devices. The most important factors for the physical
part of the network are:
•
Main ring length and distance between MAUs
•
Length of the lobes attaching MAUs to devices, including any
adjusted lobe lengths adjustments that may need to be made to
include LAU lobe lengths.
•
Number of wiring closets
•
Verifying that the proper type of cable is used (see Section 2.4,
Cable Specifications.)
•
Safeguarding against electrical interference, especially when
UTP cable is used.
A copy of the floor plans of the buildings that will use the token ring
network will help greatly in planning the installation. For more
information, see Section 1.2, Related Publication.
NOTE:
When using Type 3 cable with 4 Mb token rings, Andrew CTD-440C
Media Filters must be used to take full advantage of the lobe lengths
stated in this chapter. When using Type 3 cable at 16 Mb, Andrew
CTD-416C Media Filters must be used. Using another brand of media
filter may result in decreased lobe length.
Installation
13
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